import java.util.*;
public class Example4_11 {
    public static void main(String args[ ] ) {
	Scanner scanner = new Scanner (System.in);
	int [] a = {12,34,9,23,45,90,123,19,34};
	Arrays.sort(a);
	System.out.println(Arrays.toString(a));
	System.out.println("输入整数，程序判断该整数是否在数组中:");
	int number = scanner.nextInt();
	int index=Arrays.binarySearch(a,number);
	if(index>=0)
	    System.out.println(number+"和数组中索引为"+index+"的元素的值相同");
	else
	    System.out.println(number+"不与数组中任何元素值相同");
	}
}
